feldspar
English
editAlternative forms
editEtymology
editPartial calque of German Feldspat, formed from Feld (“field”) + Spat (“spar”), the second element replaced with the English cognate spar.
Noun
editfeldspar (countable and uncountable, plural feldspars)
- (mineralogy) Any of a large group of rock-forming minerals that, together, make up about 60% of the earth's outer crust. The feldspars are all aluminum silicates of the alkali metals sodium, potassium, calcium and barium. Feldspars are the principal constituents of igneous and plutonic rocks.
Derived terms
editRelated terms
editTranslations
editany of a large group of rock-forming minerals
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